Scriptum/Assets/Scripts/ChangeScene.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using System;

public class ChangeScene : MonoBehaviour
{
    float x, y, z;

    public void MoveToScene(int sceneID)
    {
        SceneManager.LoadScene(sceneID);
    }


    // method is invoked only when script is assign to the player prefab object
    public void OnCollisionEnter2D(Collision2D collision)
    {
        if(collision.gameObject.tag == "SceneTransition")
        {
            collision.gameObject.GetComponent<DoorBehaviour>().ScenetToMoveTo();
        }
    }
}